[英]Is it possible to serialize/deserialize JSON to Java DTO with extra fields going into a map?
I have a DTO like this: 我有这样的DTO:
public Foo {
public int bar = 123;
public Map<String, Object> params; // key1=v1, key2=v2 etc.
}
I would like it to serialize to/from the following JSON: 我希望它能够序列化到以下JSON:
{
"bar": 123,
"key1": "v1",
"key2": "v2"
}
Does anyone know how to do this using Jackson or Genson? 有没有人知道如何使用杰克逊或简森这样做? Basically I want automatic type conversions for the fields declared in the DTO but any "extras" to go into the params map. 基本上我想要在DTO中声明的字段进行自动类型转换,但是任何“额外”都要进入参数映射。
Thanks @fge for putting me on the right track. 谢谢@fge让我走上正轨。 Jackson has @JsonAnySetter and @JsonAnyGetter annotations that can be used to do this: Jackson有@JsonAnySetter和@JsonAnyGetter注释可用于执行此操作:
public Foo {
public int bar;
private transient Map<String, Object> params = new HashMap<String, Object>();
@JsonAnySetter
public void set(String k, Object v) { params.put(k, v); }
@JsonAnyGetter
public Map getParams() { return params; }
}
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